Now, this is a good question! I don't mind being spoiled about anything, up to and including the ending (with one definite exception: the culprit in a mystery story), but on the occasions where said spoiled ending has confirmed my worst fears, I've generally ended up dropping the series: either at once, or after reading/watching for a while to see if the story content would justify the conclusion somehow. There have been rare instances where I liked it enough to continue, though.

No proper option for me exists. I´ll keep reading but will drop the book if it turns to shit down the line. Unless I almost reached the end, then i´ll just speed read the rest.

This theme isn´t much of a problem for me btw. I have no manga backlog outside a few dozen untranslated series from way back when, my comic backlog is very limited and I doesn´t hurt to know how let´s say some of the 90s Milestone books ended. They just went nowhere. I am also caught up with all modern Tv shows and gaming franchises of interest, as I lead no life and I must scream.

I knew how A Star is Born 2018 ended due to it being another remake in a string of remakes.

Spoiler (mouse over to view)

It´s the same ok-ish ending the other half dozen versions of the same story had since the 1920s. The walking into the ocean was just exchanged with a rope.

I usually finish all of my reading list, those that I didn't finish is because I forget that they're already finished and rarely to be found again since no more new release to remind me to finish the series mmm...

Very seldom drop anything I'm reading and enjoying, having a spoiled ending would suck but it wouldn't deter my methodical nature.........the spoiling party would deserve being strung up by the ankles though 😀

I'd finish the series still. Even if the ending is trash.This exact thing happened to me with Gantz, I started reading it right around the time it was wrapping up, and then I heard that the ending was terrible and rushed, but I kept reading and I still had a great time going through it.For me, it's all about the journey not the destination... well, for the most part.

There's a lot of stories where the ending has been disappointing to me, but there was enough good stuff in the overall story that I still enjoyed it and it wouldn't be enough for me to drop it if I was spoilered. Also you have to be careful that you aren't being trolled by someone spoiling an ending. So if I'm invested enough I'm likely not to drop a story even if I know the ending. I'd say that most of the time I'll finish the series.

On the other hand, there has been stories that I have soured on or have gotten progressively worse after a promising start or an interesting idea for a story. Its not a problem if this happens early, because I'll drop it quick. However, sometimes this happens after several volumes in and I might hold on to the end hoping to get something out of my time, but if I find out the end is crappy to an already downward trajectory then yea I have no qualms dumping it.